Here's why:
* Different Species: Zebras and horses are different species. While they can sometimes interbreed, the offspring (called a "zebrinny" or "zebroid") are often infertile.
* Genetic Barriers: Even if a zebrinny were fertile, it's impossible to predict the exact coloring of its offspring. Zebra stripes and Appaloosa patterns are complex genetic traits.
* Ethical Considerations: Breeding different species can raise ethical concerns about the welfare of the offspring.
In short, there's no way to know what color a zebrinny would be because it's highly unlikely you could even breed one in the first place!